Erik Hellman

A team of Chicago's toughest detectives are assembled to investigate an assassin with links to a Colombian drug cartel.

As the kidnappers make their demands clear, the Intelligence Unit race to find Antonio's son by any means necessary.

As Burgess anxiously awaits news on her niece, the Intelligence Unit attempt to find the hospital bomber.

After a brush with death, Halstead decides to take matters into his own hands and track down his would-be assassin.

Intelligence investigate a series of killings that appear to be an attempt to clean up Chicago's streets using bloody force.

A devastating fire lands the crew with a lawsuit, while Dawson takes action when a colleague makes inappropriate advances towards her.